Proportional gas-mixing valve



Oct. 26 1926. 1,604,711

H. S. MYERS PROPORTIONAL GAS MIXING VALVE Filed July 6, 1922 Patented Oct. 26, 1926.

HABRY s. MYERS, orrvAN, PENNSYI.valira.`

f rRoPoRTIoNAL Gas-Mixtur; vALvn Application led July 6, 1922..,Se1va1 No. 573,136.

This invention relates to a proportional gas mixing valve, and moreparticularly to such a valve designed for controlling the fiow of two gases to a mixing chamber for the purpose of forminggan explosive mixture.

The particular adaptation selected forthe purposel of illustration is a valve designed with special vreference to its insertion in the pipe line from an airpurifying` champrovement of the details of construction of ber to the mixing chamber of a power plant such as that of the Fordson-tracton'a conn nection being provided in such a valve for the admission of natural gas. A Vvalve 'of this kind adapts'the F ordson tractor `for use asa stationary vpower plant, consuming natural gas where that is obtainable.v

vThe object ofV thev invention is 'the imsuch a proportional gas mixing valve whereby it is easily constructed and assembled, and whereby it will feed varying quantities of' airand gas in thesame proportion. Other objects of the invention willghereinafter appear in the following description and the novel features thereof will be particularly pointed out in the appended claims.

In the drawings, i

`Figure 1 represents a plan of my valve as it would appear upon therpow'er plant lof a Fordson tractor `between the air washer and the vaporizer,

Figure 2 is aside elevation of' the same,

Figure-3 is a vertical section, .s

Figure 4 isa similar sectiontaken right angle to that of Figure 3,

Figure 5 is a plan, with the cover plate of the valve removed, and

Figure 6 is a similar view of the removed cover plate.

,ata

Like reference characters indicate likev parts throughout the several figures of the drawing. It will be understood that changes in the details of construction may be made without departing from the spirit of the invention, and that the form of the valve illustrated and described is indicativeonly of the principles of invention. Such form,

vis adapted to be inserted in a means ofthe lock nut 32;

passagevof air and gas. Suitable connectingmeans areprovided as well as stop Vor limiting devices. v v `The bodycl() 'comprises a central circular chamber 11, from which projectV the arms l2, 12 at the end of'which are formed the machined connections land 14. The body power plant, such as is provided for the'Fordson tractor. In that particular power plant, the connectorj13`feeds into the air washer, while the connector 14 feedsinto the mixing chamber, and the wh-ole device replaces the short con-V necting pipe having the .controlling valve therein. e y v i.

. Thev central chamber "is formed y' with two compartments land 16, separated bythe partition 17, the bearing 18 and gaschamf ber 22. Theair chamber lcommunicates with the connector 20, while the chamber 16 communicates withV theVconnector 14.

The gas chamber 22 is made by forming a` bore from=the underside23 of the valve and a slittedconduit 24 is formed at the upper end ofthe gas chamber to the upper face 25 of the body of the valve. kThe cover isin the formof ay disc 26 having a control arm 27, projecting (from oneside thereof and from the other axstop lug 28. In the cover are two recesses 29 and 30, the recess 29 being designed to permit communication between the chambers 15 and 16 ofthe body, whereby air may pass from the air washer to the mixing chamber of the power` plant. The recess 30 is designed to admit gas from the chamber 22.

PAT1E NTOFFI1CE- i The lug 28 is projected downwardlyy out `of i theI general planeof the cover, as shown in Figure 2, and 1s provided with a screw threaded aperture through which passes the threaded bolt 81, which is held in any selected or adjusted position on the lug by It will be appreciated that the contacting faces of the body 11 and the cover 26 are properly machined so as to form a tight joint. tact, the body and cover are provided with aligned apertures at their centers through which is passed the clamping bolt 38, the head of which lies in the counterbore 34 in the under face of the body. Surrounding the threaded nut of the bolt 33 a springV 34 is mounted, and this spring is compressed any suiiicient amount by the nut, 35, which in turn is held against rotation upon the bolt,

In order` to hold them yin close conbetween the body and cover and that when the valve parts are placed in any particular position with respect to each other, this con tact is made suiiicient to hold them in that position. Y Y

The numerals 37, 37 indicate any suitable Washers Which may be employed to make air tight joints between the connectors 137 and? Vlil and the air washer and mixing: chamber. From the foregoing description,y the proposed operation ofv the valve should be apparent to one skilled. in the art. A rsum thereof, however, Will be given. ln Figure- 1, the valve is shown as closed, andthe 'parts are in the position when air and gas are ad mitted to the mixing chamber in just sunicient quantity to cause the engine to run` without load. At that time the bolt 3l is against the bodyY ofthe valve, as shown ati in Figure 1.x Howe-ver, it will be appreciaftf ed that this adjustment can be changed so that the flow of fuel can be shut off completely, resulting in the stopping-of theY en cine. e l C The valve cover isnoW .rotatedbyexerting a pull upon the arm 27 in they direction of the arrow' of Figure 1. This will` cause the recess 30 to move overthe' face of the slotted' opening'Qll in the valve body, andv'at the same time Will cause the recess E29` to move cross the chamber 15.v i The progressively increasing passagesv produced by"Y this movevment in. both the gas and. air intakes will be in correct proportion for the Vengine to obtain increased. speed andpovv'er therefrom. The relative dimensions of tlre-` several recessesand intakes have been determined by experimentation under actual operating conditions as to gas pressure in thegas and oil fields, and are substantially those shown in the drawing. It Will bev appreciated that when these conditions are changed. it will be necessary to slightly vary these yrelative.

sizes.`

It will be seen that I have produced bythis valve a convenient meansv for permitting the use of an engine of an ordinary tractor as a stationary power plant using natural gas as a fuel instead of liquid fuel. This use is particularly desirable in `the gas and oil fields Where natural gas has a certain percentage of products Which are afterwards reduced to. gasoline. It will be appreciated also that such a Vvalve Will largely increase the uses to which the ordinary tractor can be placed. In my shop at Van, Pa., I have in use at-the present time a povver plant comprising a tractor equipped with such a valve. This. povver'plant is running a dozen pieces of machinery including a gear cutter and lathes; the fuel used is the natural gas. produced on the farm upon which myy shop is located. y

Having described my invention,` what I claim as new and desire to secure by Letters.

1. In aV proportional gas mixing valve, a valve 'bodyg comprisingra block of metal recessed to provideseparated air and gas intake chambers and an outlet for mixed air Vand gas,a disk member covering the recessesv in said body and having recesses in one face' thereof to provide passageways between theV inlet chambers and the outletin said body, and means for .varying the quantity of mixed air and gas passing through said body by a movementof said cover.` w

2. In a -proportional gas mixingv valve, a body having gas and air intakes and a mir:- ture conduit, a cover rotatably mounted upon said Vbody and having recesses connecting said intakes and conduit, meansfor adjustably maintaining said body and cover in frictional contact, an arm projecting from said cover for rotating the same, and a limiting lug projecting from said cover and carrying an adjustable bolt adapted to contact with the body and 'define the closed position for said valve'.

In testimony whereof IV affix. my signature.

' HARRY S. MYERS. 

